1
Q
What is absolute electric potential
A
potential energy per unit charge of a positive point charge at that point
2
Q
When is the magnitude of electric potential the greatest
A
At the surface of a charge
3
Q
What is electric potential at infinity
A
0
4
Q
What is the equation for potential in a radial field
A
V = 1 / 4pi space permitivity * Q/r
5
Q
How can potential graphs be represented
A
when the charge is positive potential is positive and charge is repulsive
when the charge is negative potential is negative and the force is attractive
6
Q
How is electric field strength calculated using the graphs provided
A
tangent at a point and change in potential over distance provides value for E at that point
A level Physics - Electric Fields
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